panic: softclock: invalid to_clock: -2115164542
Starting stack trace...
panic(ffffffff833b1f36) at panic+464
softclock(0) at softclock+678
softintr_dispatch(0) at softintr_dispatch+315
dosoftint(0) at dosoftint+84
Xsoftclock() at Xsoftclock+39
acpicpu_idle() at acpicpu_idle+1111
sched_idle(ffffffff83846ff0) at sched_idle+913
end trace frame: 0x0, count: 250
End of stack trace.
syncing disks...3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3  giving up

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 8f385a59-d101-44dd-592e-0bd3fdfaf750
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f26e0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.67
boot> show malloc
boot: illegal argument malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace